Browsing by Subject "Problem solving."
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Item Open Access An implementation of structured systems analysis to an information technology company(Bilkent University, 1996) Alparslan, KorhanSystems Analysis is the process of analyzing an organization with the ultimate objective of modifying and improving it. It is a way of solving problems existing in organizations. Structured Analysis, with the aid of visual capabilities, is the most commonly applied technique of implementing systems analysis. The two major components of structured analysis are Data Flow Diagrams(DFDs) and Data Dictionary. Wide-spread usage of Computer-Aided Software Engineering(CASE) tools that support systems analysis and design made the structured analysis process easier to manage and control. This study aims to apply structured analysis methodology to a Turkish company that operates in the information technology industry. Context diagram which is level 0 DFD is developed initially. Then the level 1 and level 2 DFDs are produced. The DFDs display the processes of each department and data flow between, in and out of departments. Each process that exists in the level 2 DFDs is explained and the data dictionary is provided in the appendices. The study concludes with a summary of recommendations that can be implemented for the improvement of the organization work flow.Item Open Access On the distribution of throughput of transfer lines(Bilkent University, 1998) Deler, BaharA transfer line corresponds to a manufacturing system consisting of a number of work stations in series integrated into one system by a common transfer mechanism and a control system. There is a vast literature on the transfer lines. However, little has been done on the transient analysis of these systems by making use of the higher order moments of their performance measures due to the difficulty in determining the evolution of the stochastic processes under consideration. This thesis examines the transient behavior of relatively short transfer lines and derives the distribution of the performance measures of interest. The proposed method based on the analytical derivation of the distribution of throughput is also applied to the systems with two-part types. An experiment is designed in order to compare the results of this study with the state-space representations and the simulation. They are also interpreted from the point of view of the line behavior and design issue. Furthermore, extensions are briefly discussed and directions for future research are suggested.